Not really. I'd check this off as one of many 'silent updates'; little changes I make to tune the infrastructure that go relatively unnoticed. If I did a blog post about every little tuning I do, I'd be posting four or five times a day, every day or two.

I am noticing now that Chrome has re-cached HTS, it's automatically forcing me to use SSL, just from the HSTS header. That's kind of really neat. This is great because it forces SSL where supported browsers understand the header, but doesn't require SSL (such as a 301 redirect).